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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.hadoop.hive.ql.exec;

import java.io.Serializable;
import java.util.ArrayList;

/**
 * RowSchema Implementation.
 */
public class RowSchema implements Serializable {

  private static final long serialVersionUID = 1L;
  private ArrayList signature;

  public RowSchema() {
  }

  public RowSchema(RowSchema that) {
    this.signature = (ArrayList) that.signature.clone();
  }

  public RowSchema(ArrayList signature) {
    this.signature = signature;
  }

  public void setSignature(ArrayList signature) {
    this.signature = signature;
  }

  public ArrayList getSignature() {
    return signature;
  }

  @Override
  public String toString() {
    StringBuilder sb = new StringBuilder();
    sb.append('(');
    if (signature != null) {
      for (ColumnInfo col: signature) {
        if (sb.length() > 1) {
          sb.append(',');
        }
        sb.append(col.toString());
      }
    }
    sb.append(')');
    return sb.toString();
  }
}